Slide fastener stringer



SLIDE FASTENER STRINGER Filed March 23 1961 Ticl. E.

PlCK K PICK 2 P\CK 3 PICK 4- INVEN TOR. 7 6 (/2445: A. fif/voza UnitedStates Patent 3,143,779 SLIDE FASTENER STRINGER James A. Hendiey,Staniey, N.C., assignor to Talon, Inc., a corporation of PennsylvaniaFiled Mar. 23, 1961, Ser. No. 97,856 Claims. (Cl. 242t}5.16)

This invention relates to slide fasteners, and more particularly to thetype wherein the interlocking means consists of a continuous pre-formedfilament such as a coiled or spirally-arranged filament. In the presentinvention the filament is secured to the edge of the tape during theweaving thereof.

While it has been suggested broadly to weave the preformed filament intothe edge of the tape at the time of weaving thereof, in most cases anunsatisfactory product was obtained, primarily, for the reason that thefilament was not properly secured to the edge of the tape. Usually thefilament was too loosely interwoven with the weft threads which resultedin a stringer in which the filament was not satisfactorily afiixed tothe edge of the tape and distortion or displacement of the filamentoften occurred when in use. It is imperative in such a woven-in-filamentconstruction that the filament be subjected to the proper tension, bothduring the weaving operation and in the resulting product, so that thefilament is firmly held and, yet not distorted, and it is to an improvedstringer having these advantages that the present invention relates.

Accordingly, it is the general object of the present invention toprovide an improved stringer for slide fasteners in which a pre-formedfilament is woven integral with the edge of the tape at the time of theweaving thereof which is inexpensive in its construction and, at thesame time, strong and rugged whereby a satisfactory slide fastenerstringer is provided.

It is another object of the invention to provide such a stringer havinga new and improved weave for securely attaching the filament to the edgeof the tape so as to prevent any displacement or distortion thereof bothduring the weaving operation and when it is in use.

It is a more specific object of this invention to provide an improvedWoven-in-filament type stringer for slide fasteners wherein there isprovided an elongated relatively large cord to which the series ofconvolutions of a preformed coiled filament are securely bound by meansof a plurality of warp threads arranged therearound which are interwovenwith a weft thread so as to securely affix the filament to the cord and,at the same time, to provide a headed edge construction along the edgeof the tape directly next to the filament.

Various other objects and advantages of this invention will be moreapparent in the course of the following specification, and will beparticularly pointed out in the appended claims.

In the accompanying drawings, there is shown for the purpose ofillustration, an embodiment which my invention may assume in practice.

In these drawings:

FIG. 1 is a plan view of a slide fastener having tape stringers inaccordance wth the present invention incorporated therewith,

FIG. 2 is an enlarged diagrammatic plan view of a fragment of the tapestringer constructed in accordance with the invention,

FIG. 3 is a sectional view taken on line 33 of FIG. 2, showing the firstpick or course of weave,

FIG. 4 is a sectional view taken on line r4 of FIG. 2, showing thesecond pick of the weave,

FIG. 5 is a sectional view taken on line 55 of FIG. 2, showing thethread pick of the weave,

FIG. 6 is a sectional view taken on line 66 of FIG. 2, showing thefourth pick of the weave,

3,143,779 Patented Aug. 11, 1964 FIG. 7 is an enlarged edge view of thestringer shown in FIG. 2, and

FIG. 8 is a weavers diagram for the improved tape stringer of myinvention.

The present invention will be described with reference to theinterweaving of a continuous coiled filament consisting of a series ofinterconnected convolutions of the type shown in US. patent to NicholasWahl, No. 2,300,442 dated November 3, 1942. Such filament is madepreferably of nylon, perlon of of some other suitable plastic material.While the present invention is illustrated in connection with a coiledfilament, it will be understood that any other type of continuouspre-formed filament may be employed, such as the so-called Ladder orMeander type.

In FIG. 1 of the drawings, there is illustrated a slide fastener havinga pair of stringers T incorporated therewith constructed in accordancewith present invention. Each of these stringers consist of a web portionW and a beaded edge B having a continuous coiled interlocking filament Fattached to the outer side thereof and on which there is arranged aslider S for longitudinal movement therealong for interengaging anddisengaging the opposed coiled filaments F in a manner well known tothose skilled in the art.

According to the present invention, and referring more particularly toFIGS. 2 through 7 of the drawings, the outer beaded edge B of each ofthe stringers consists of a longitudinally extending stuffer cord Chaving a plurality of longitudinally extending warp threads arrangedtherearound in substantially circular fashion so as to be substantiallyconcentric therewith, eight in the present instance, and designated as 2through 9 of the drawings. The body of the tape is of a conventionaltwill design or weave and consists of a plurality of warp threads 10interwoven with a weft or filler thread 12. The weave of each of thepicks as shown, is generally over one and under one of the Warp threadsthroughout the tape, but any other suitable weave may be provided.

The tape stringer in accordance with the present invention is welladapted to be woven on a needle or shuttleless loom. As clearlyillustrated in FIGS. 2 through 6 of the drawings, the first pick of theweft 12 which is a double pick passes through and between the warpthreads 10 in the web so as to be interwoven therewith, then in underthe warp thread 9 at the beaded edge on one or upper side thereof, asshown in FIG. 3, over the warp threads 6, 7 and 8 at said edge, and overand around a convolution of the coiled filament.

The second double pick passes through the web, then over warp threads 2and 3 of the beaded edge on the opposite or lower side thereof, as shownin FIG. 4, in under the warp thread 5 of said edge, and again over andaround a convolution of the filament F.

The third double pick of the weft thread passes through the web, thenover the warp threads 8 and 9 of the beaded edge on the first or upperside thereof, as shown in FIG. 5, in under warp thread 7 and over warpthread 6 of said edge, and, as before, over and around a convolution ofcoiled filament F.

The fourth and last double pick to complete one weaving cycle passesthrough the web, then over the warp thread 2 and in under the warpthread 3 of the beaded edge on the second or lower side thereof, asshown in FIG. 6, over the warp threads 4 and 5 of said edge, and againover and around a convolution of the coiled filament F.

In FIG. 8, of the drawings, there is shown a conventional weaversdiagram for the particular tape stringer herein illustrated. The diagramrefers to the position of the harnesses and frames, the crossed whitesquares and black squares corresponding to an up position and the allwhite squares corresponding to a down position, or vice versa. The righthand side of this diagram represents the weave of the beaded edge. Theblack squares correspond to the warp threads 2 through 9 together withthe stufier cord C which form the beaded edge and the filament F. Theremainder of the diagram is a harness diagram with the crossed whitesquares corresponding to the warp threads of the web W.

As a result of my invention, it will be seen that there is provided astringer for slide fasteners of a woven-infilament type construction inwhich the filament is held firmly and securely in position due to thearrangement and interweaving of the weft thread with the warps and cordat the edge of the tape together with the convolutions of the filament.It will be noted that the elongated filament F is held securely inposition directly next to the elongated cord C by the weft thread 12 soas to provide a rather compact arrangement.

It will be seen further that an elongated beaded portion is formed alongthe edge of the tape directly next to the coiled filament due. to thearrangement of the cord C and thewarpthreads arranged therearound whichare interwoven with the weft thread 12 which is a most desirable featurein this type of stringer construction and one of the most importantaspects of the present invention.

While I have shown and described an embodiment which my invention mayassume in practice, it will be understood that this embodiment is merelyfor the purpose of illustration and description, and that other formsmay be devised within the scope of my invention as defined in theappended claims.

I claim:

1. In a stringer for a slide fastener, a plurality of longitudinallyextending warp threads, a continuous weft thread interwoven back andforth through and between said warp threads so as to provide a wovenweb, a beaded edge arranged along one edge of said web consisting of alongitudinally extending cord having a plurality of longitudinallyextending warp threads disposed therearound, a continuous filamentarranged along said web at the outer side of said cord having one sideonly in contact therewith coextensive throughout the length thereof,said filament being deformed so as to provide spaced interlocking meanstherealong, said weft thread also being interwoven with said lastmentioned longitudinally extending Warp threads and extending aroundboth said cord and said filament between said interlocking means, theweft thread passing through the web, over and between the last mentionedwarp threads on one side of the cord at the edge of the tape, over andaround the cord and filament at said edge,'then back over and betweenthe last mentioned warp threads on the opposite side of the cord, andback through the web to complete one weaving cycle.

2. In a stringer for a slide fastener, a plurality of longitudinallyextending warp threads, a continuous weft thread interwoven back andforth through and between said warp threads so as to provide a wovenweb, a beaded edge arranged along one edge of said web consisting of alongitudinally extending cord having a plurality of longitudinallyextending warp threads disposed therearound, a continuous coiledfilament arranged along said web at the outer side of said cord havingone side only in contact therewith coextensive throughout the lengththereof, each of the convolutions of said coiled filament being deformedso as to provide interlocking means thereon, said weft thread beinginterwoven with said last mentioned longitudinally extending warpthreads and extending around both said cOrd and the convolutions of saidcoiled filament between said interlocking means, the weft thread passingthrough the web, over and between the last mentioned warp threads on oneside of the cord at the edge of the tape, around the cord and theconvolutions of said filament at said edge, then back over and betweenthe last mentioned Warp threads on the opposite side of the cord andback through the web to complete one weaving cycle.

3. In a stringer for a slide fastener, a plurality of longitudinallyextending warp threads, a continuous weft thread interwoven back andforth through and between said warp threads so as to provide a wovenweb, a beaded edge arranged along one edge of said web consisting of alongitudinally extending cord having at least eight longitudinallyextending warp threads disposed therearound, four on each side, acontinuous filament arranged along said web at the outer side of saidcord having one side only in contact therewith coextensive throughoutthe ength thereof, said filament being deformed so as to providespaced-apart interlocking means therealong, said weft thread beinginterwoven with said last mentioned longitudinally extending warpthreads and extending around both said cord and said filament betweensaid interlocking means, the weft thread passing through the web, underone of the last mentioned warp threads on one side of the cord and overthe other three warp threads on that side or" the cord, then over andaround both the cord and filament, under one of the last mentioned warpthreads on the opposite side of the cord, then over'the other three warpthreads on that side, back through the web to the opposite side of theweb, then again back through the web, over two of the. last mentionedwarp threads on the first side of the cord, under the next warp threadon that side, over the remaining warp threads on that side, over andaround the cord and filament, then back over two of the last mentionedwarp threads on the second side of the cord, under the next warp threadon that side, over the remaining warp thread on that side, and then backthrough the web to complete the cycle.

4. In a stringer for a slide fastener, a plurality of longitudinallyextending warp threads, a continuous weft thread interwoven back andforth through and between said warp threads so as to provide a wovenweb, a beaded edge arranged along one. edge of said web consisting of alongitudinally extending cord having at least eight longitudinallyextending warp threads disposed therearound, four on each side, acontinuous coiled filament arranged along said web at the outer side .ofsaid cord having one side only in contact therewith coextensivethroughout the length thereof, each of the convolutions of said filamentbeing deformed so as to provide interlocking means thereon, said weftthread being interwoven with said last mentioned longitudinallyextending warp threads and extending around 'both said cord and theconvolutions of said coiled filament between said interlocking means,the weft thread passing through the web, under one of the last mentionedwarp threads on one side of the cord and over the other three warpthreads on that side of the cord, then around said cord and aconvolution of said filament, under one of the last mentioned warpthreads on the oppo-' site side of the cord, then over the other threewarp threads on that side, back through the web to the opposite side ofthe web, then again back through the web, over two of the last mentionedwarp threads on the first side of the cord, under the next warp threadon that side, over the remaining warp threads on that side, over andaround said cord and a convolution of said filament, then back over twoof the last mentioned warp threads on the second side of the cord, underthe next warp thread on that side, over the remaining warp thread onthat side, and then back through the web to complete the cycle.

5. In a stringer for a slide fastener, a plurality of Iongitudinallyextending warp threads, a continuous weft thread interwoven back andforth through and between said warp threads so as to provide a wovenweb, a marginal edge portion arranged along one side of said webconsisting of a single longitudinally extending cord having a pluralityof longitudinally extending warp threads together with a continuousfilament disposed therearound, both of said last warp threads and saidfilament arranged in substantially circular fashion around said corddirectly next thereto and substantially concentric therewith so'as tocompletely encircle the same with the filament disposed on the 'outerside of said cord and being coextensive throughout the length thereof,said filament being deformed so as to provide spaced-apart interlockingmeans therealong, said weft thread being interwoven with said last warpthreads and extending around both said cord and said filament.

6. In a stringer for a slide fastener, a plurality of longitudinallyextending warp threads, a continuous weft thread interwoven back andforth through and between said warp threads so as to provide a wovenweb, a marginal edge portion arranged along one side of said webconsisting of a single longitudinally extending cord having a pluralityof longitudinally extending warp threads together with a continuouscoiled filament disposed therearound, both of said last warp threads andsaid filament arranged in substantially circular fashion around saidcord directly next thereto and substantially concentric therewith so asto completely encircle the same with the filament disposed on the outerside of said cord and being coextensive throughout the length thereof,each of the convolutions of said coiled filament being deformed so as toprovide interlocking means thereon, said weft thread being interwovenwith said last warp threads and extending around both said cord and theconvolutions of said coiled filament.

7. In a stringer for a slide fastener, a plurality of longitudinallyextending warp threads, a continuous weft thread interwoven back andforth through and between said warp threads so as to provide a wovenweb, a marginal edge portion arranged along one side of said webconsisting of a single longitudinally extending cord having at leasteight longitudinally extending warp threads, four on each side, togetherwith a continuous filament disposed therearound, both of said last warpthreads and said filament arranged in substantially circular fashionaround said cord directly next thereto and substantially concentrictherewith so as to completely encircle the same with the filamentdisposed on the outer side of said cord and being coextensive throughoutthe length thereof, said filament being deformed so as to provide spacedinterlocking means therealong, said weft thread being interwoven withsaid last warp threads and extending around both said cord and saidfilament.

8. In a stringer for a slide fastener, a plurality of longitudinallyextending warp threads, a continuous weft thread interwoven back andforth through and between said Warp threads so as to provide a wovenweb, a marginal edge portion arranged along one side of said webconsisting of a single longitudinally extending cord hav ing at leasteight longitudinally extending warp threads, four on each side togetherwith a continuous coiled filament disposed therearound, both of saidlast warp threads and said filament arranged in substantially circularfashion around said cord directly next thereto and substantiallyconcentric therewith so as to completely encircle the same with thefilament disposed on the outer side of said cord and being coextensivethroughout the length thereof, each of the convolutions of said filamentbeing deformed so as to provide interlocking means thereon, said weftthread being interwoven with said last warp threads and extending aroundboth said cord and the convolutions of said filament.

9. In a stringer for a slide fastener, a woven tape consisting of aplurality of longitudinally extending warp threads, a single elongatedrelatively large cord arranged along one side of said warp threads, aplurality of additional warp threads arranged around said cord, acontinuous elongated pre-formed fastener filament arranged along saidcord, both said last warp threads together with said filament arrangedcircumferentially around said cord and substantially concentrictherewith so as to completely encircle the same with one side of thefilament disposed directly next to the cord on the outer side thereofand being coextensive throughout the length thereof, a continuous weftthread interwoven back and forth through and between said first andsecond warp threads so as to bind securely said filament to the outerside of said cord and said second warp threads and so as to provide anelongated beaded edge inwardly of said filament and directly nextthereto.

10. In a stringer for a slide fastener, a woven tape consisting of aplurality of longitudinally extending warp threads, a single elongatedrelatively large cord arranged along one side of said warp threads, acontinuous elongated pre-formed coiled filament arranged along the outerside of said cord so that the series of convolutions thereof aredisposed directly next thereto, a plurality of additional warp threadsarranged around said cord to the inner side of said filament, both saidlast warp threads together with said filament arranged circumferentiallyaround said cord and substantially concentric therewith so as tocompletely encircle the same, a continuous weft thread interwoven backand forth through and between said first and second warp threads andaround the convolutions of said filament.

References Cited in the file of this patent UNITED STATES PATENTS1,775,232 Blair Sept. 9, 1930 1,776,847 Blair Sept. 30, 1930 2,373,835Jones Apr. 17, 1945 2,504,079 Murphy Apr. 11, 1950 2,567,160 Wahl Sept.4, 1951 3,058,188 Yoshida Oct. 16, 1962 FOREIGN PATENTS 340,464Switzerland Oct. 15, 1959 1,087,096 Germany Aug. 18, 1960

1. IN A STRINGER FOR A SLIDE FASTENER, A PLURALITY OF LONGITUDINALLYEXTENDING WARP THREADS, A CONTINUOUS WEFT THREAD INTERWOVEN BACK ANDFORTH THROUGH AND BETWEEN SAID WARP THREADS SO AS TO PROVIDE A WOVENWEB, A BEADED EDGE ARRANGED ALONG ONE EDGE OF SAID WEB CONSISTING OF ALONGITUDINALLY EXTENDING CORD HAVING A PLURALITY OF LONGITUDINALLYEXTENDING WARP THREADS DISPOSED THEREAROUND, A CONTINUOUS FILAMENTARRANGED ALONG SAID WEB AT THE OUTER SIDE OF SAID CORD HAVING ONE SIDEONLY IN CONTACT THEREWITH COEXTENSIVE THROUGHOUT THE LENGTH THEREOF,SAID FILAMENT BEING DEFORMED SO AS TO PROVIDE SPACED INTERLOCKING MEANSTHEREALONG, SAID WEFT THREAD ALSO BEING INTERWOVEN WITH SAID LASTMENTIONED LONGITUDINALLY EXTENDING WARP THREADS AND EXTENDING AROUNDBOTH SAID CORD AND SAID FILAMENT BETWEEN SAID INTERLOCKING MEANS, THEWEFT THREAD PASSING THROUGH THE WEB, OVER AND BETWEEN THE LAST MENTIONEDWARP THREADS ON ONE SIDE OF THE CORD AT THE EDGE OF THE TAPE, OVER ANDAROUND THE CORD AND FILAMENT AT SAID EDGE, THEN BACK OVER AND BETWEENTHE LAST MENTIONED WARP THREADS ON THE OPPOSITE SIDE OF THE CORD, ANDBACK THROUGH THE WEB TO COMPLETE ONE WEAVING CYCLE.